Though the calendar has ticked over into May, more than six weeks removed from the end of winter, in some parts of the Midwest and Rockies the shovels haven’t been put away for the season. A May Day snowstorm that spanned from Oklahoma to Wisconsin gave schoolchildren a perplexing snow day in districts getting ready for final exams. The hardest hit areas in Minnesota and Wisconsin received up to 16 inches of wet, sticky snow — quite a roaring entrance for the month of May.